Radio Direction Finding

ARDF Homepage
HB9HVF designed two ARDF Receivers. One for 80 meter band and the other for the two meter band. Both are tested in hard competition (Swiss Championship). They have extremely low power requirement compared to other receivers. Download his papers about these receivers, so you have every information available to build these receivers for yourself (papers are only available in German).

Radio Foxhunting
Radio Foxhunting (Radio Direction Finding) is a cross-country running sport, demanding physical and mental fitness. Similar to orienteering, however requires more electronic preparations. Great sport for people of any ages. Perfect to develop physical strength, analytical thinking and radio knowlegde. Typical foxhunting event takes place in the woods/national parks. Competitor, equipped with the detailed topographic map, compass, and radio receiver, searches for hidden radio transmitters(foxes). The goal is to find hidden foxes as quickly as possible. The time from start to finish is recorded.